From Chapter 3:
The fumes of dried coltsfoot leaves were used as a remedy in cases of difficulty of breathing, both in ancient Roman times and in Tudor England. Lyte, in his translation, 1578, of Dodoens' "Historie of Plants," says of coltsfoot: "The parfume of the dryed leaves layde upon quicke coles, taken into the mouth through the pipe of a funnell, or tunnell, helpeth suche as are troubled with the shortnesse of winde, and fetche their breath thicke or often, and do [sic] breake without daunger the impostems of the breast." The leaves of coltsfoot and of other plants have often been used as a substitute for tobacco in modern days. A correspondent of Notes and Queries, in 1897, said that when he was a boy he knew an old Calvinist minister, who used to smoke a dried mixture of the leaves of horehound, yarrow and "foal's foot" intermingled with a small quantity of tobacco. He said it was a very good substitute for the genuine article. Similar mixtures, or the leaves of coltsfoot alone, have often been smoked in bygone days by folk who could not afford to smoke tobacco only.

From Chapter 7:
In Townley's well-known two-act farce "High Life Below Stairs," 1759, the servants take their masters' and mistresses' titles and ape their ways. The menservants—the Dukes and Sir Harrys—offer one another snuff. "Taste this snuff, Sir Harry," says the "Duke." "'Tis good rappee," replies "Sir Harry." "Right Strasburgh, I assure you, and of my own importing," says the knowing ducal valet. "The city people adulterate it so confoundedly," he continues, "that I always import my own snuff;" and in similar vein he goes on in imitation of his master, the genuine Duke. These servants copy the talk and style (with a difference) of their employers; but smoking is never mentioned. The real Dukes and Sir Harrys took snuff with a grace, but they did not do anything so low as to smoke, and their menservants faithfully aped their preferences and their aversions.